Estudio geotécnico in Coslada

In Coslada, the dominant subsoil is composed of a significant presence of masses of water and associated deposits, together with smaller percentages of gypsum, anhydrite, salts and, to a lesser extent, gravels, compacted sands and carbonate rocks. The existence of aquifers with moderate permeability may influence bearing capacity and water-related behaviour beneath foundations, requiring particular attention to groundwater levels. The occasional presence of gypsum and anhydrite increases the risk of dissolution, which may affect the stability of foundations; in addition, expansive clays, which locally predominate, imply swelling risks that must be taken into account when defining the type and depth of foundation.

The area shows very low seismicity, with few events and a low maximum magnitude (Mmax 3), so seismic action is not a primary concern in structural design. However, the presence of karstic phenomena must be checked before proceeding with any foundation solution, given the possible influence of dissolutions in the subsoil. The main constraint in the geotechnics of Coslada is the concurrence of soils with expansive clays and zones potentially karstic due to gypsum, aspects that are critical and must be investigated thoroughly in the geotechnical study of the site.